Japan's Nikkei share average tumbled over 1% on Tuesday, reacting to U.S. President-elect Donald Trump's proposed tariffs. Trump announced plans to impose a 25% tariff on goods from Mexico and Canada, and a 10% tariff on Chinese goods, citing immigration and drug trade concerns. Most Nikkei constituents declined, with IHI Corp, Fujikura, and Kawasaki Heavy Industries experiencing the largest losses.